Wire-working tool.



No. 769,023. 'PATENTED AUG. 30, 1904.

3 J. ROSSI, WIRE WORKING 117001,.

APPLIOATION FILED APR. 6, 1904.

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x P {i 22 No. 769,028. I PATENTED AUG. 30, 1904.

J. ROSSI.

' WIRE WORKING TOOL.

APPLICATION FILED APR. 6, 1904.

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abfowm w JBatgntgd August V30, 1904.

' P TENT OFFICE.

JOHN ROSSI, OF NEWCASTLE, INDIANA.

WIRE-WORKING TOOL.

SPECIFICATION forming part of Letters Patent No. 769,023, dated. August30, 1904.

Application filed April 6, 190

material due to the fact that a short piece of wire, averaging perhapssix inches in length,

has been required for the purpose of performing such final operation.and has afterward been broken off and thrown away. In the manufacture ofpiano-wires, where the product amounts to thousands of wires per'day,

. this waste is a material item and adds appreciably to the cost ofproduction.

It is the object of my invention to produce a tool by means of whichthese loops can be formed in a manner which admits of using the entirewire and leaving no waste whatever; and said invention consists in atool for the purpose, as will be hereinafter more particularly describedand claimed.

Referring to the accompanying drawings, which are made a part hereof,and on which similar reference characters indicate similar parts, Figure1 is a perspective view illustrating a tool embodying my saidinventionas it appears when seen from the front side; Fig.

2, a similar view as it appears when seen from the rear side; Fig. 3, atop or plan view there of; Fig. 4, a horizontal sectional view at thepoint indicated bythe dotted line 4: 4 in'Fig. 6; Fig.- 5, a frontelevation; Fig. 6, a side elevation; Fig. 7 a central vertical sectionalview as seen when looking in the direction indicated by the arrows fromthe dotted line 7 7 in Fig. 5; Figs. 8 and 9, elevations, on an enlargedscale, of the facing or operative surfaces of the upper or operativeends of the jaws respectively; Fig. 10, a detail horizontal sectionalview through said jaws at the point indicated by the dotted line 1010 inFig. 5;

' Fig. 11, a detail sectional view as seen when looking in the directionindicated by the arrows from the dotted line 11 11 in Fig. 10 andillustrating the cranked position of the part Serial No. 201,833. (Nomodel.)

l 52 by means of dotted lines; and Fig. 12, a

sectional View of the nut 32.

My improved tool is adapted to be used in conjunction with an ordinarytwister, (not shown,) by means of which the wires after being placed inmy said tool are properly twisted. 5 5 Said tool in use shouldpreferably be secured upon the end of a suitable bench or table, ofwhich a fragment 21 appears in the drawings and to which the base 22 0fmy improved tool is shown as secured by a bolt 23. To this base aresecured the two principal jaws 24 and 25 by means of four bolts 26, 27,28, and 29, which pass through suitable holes in the base and are tappedinto the jaws. The lower bolts 26 and 28 are shown as fitting approxi- 5mately closely in the holes in the base, through which they pass, whilethe holes through which the upper bolts 27 and 29 pass are ofsufficiently larger diameter than said bolts to permit some movement ofthe jaws toward and from each 7 other, said movement being, however,limited by the difference between the diameters of "the bolts and of.the holes in question. These jaws are normally held apart or away fromeach other by suitable means, as a spring 30, and they are drawntoward'each other by a clamping-screw 31, which passes through said jawsand enters a nut 32 at one end, while it has a shoulder at33 and isprovided with a crankhandle 34 orother appropriate means of turning itat the other end. The movementof this crank-handle in operation is alimited one, as the distance the jaws need to be moved is very short.The'position of the crank-handle has much'to do with. the speed at which5 the operation can be performed, and I am able to precisely adjust thisspeed by the fol-,

, lowing means: Upon the face of the jaw 25, against which the nut 32bears, I put a stud 35, and in the face of the nut which is in con- 9tact with said jaw I form a series of holes 36, any one of which may fitover said stud. In practice I turn this nut to just the point requiredto bring the crank-handle into the most convenient position for theoperator (in performingthe workof bringing the clamping-jaws onto thewire in operation')'and en-- gage it with the stud at that point. As amovement of half a turn or. less of the crankhandle is all that isrequired in loosening and tightening the jaws, it will be seen that avery accurate adjustment may easily be made. As the tool is adapted tobe used withwires of several different sizes, a separate adjustment isto be made for each size of wire.

Secured to the front faces of the jaws 24 and 25 are other jaws, 41 and42, said jaws being held in place by pivot-bolts 43 and 44.

, The jaw 41 at its upper end rests at one side the nut 32, has a seriesof holes each of which is adapted to engage with a stud 51 on theadjacent face of the jaw 41, and by a manipulation similar to thatdescribed as being suitable to the nut 32 the position of the crankednut in operation may be adjustably determined and the most convenientrelation of the parts for purposes of operation thus secured.

The jaw 42 is adapted to be moved toward and from the jaw 41 by means ofa crank 52,

, (or cam,) mounted in the adjacent jaw 25 and which extends through asuitable opening 53 in saidjaw 42, said crank or cam being turned asrequired by means of its handle 54. As will be presently more fullyexplained, the operative distance between thejaws 41 and 42 needs to bevery exact inorder to secure the best results and needs to be varied tofit the various sizes of wire, and therefore the jaw 42 needs anadjustable stop. This I have provided in the form of a wedge-shapedintermediate part 55, (see especially Fig. 4,) which is prolonged into athreaded extension 56, upon which I place the nut 57. This nut has anannular groove and rests in a suitable bearing 58, shown as extending upfrom the base 22, so that turning the nut will force the part 55positively in one direction or the other, and thus the position andpoint of contact of the jaws and said part may be accu.

rately determined.

In operation my invention is used as follows: The end of the piece ofwire W (see Fig. 1) upon which the loop is to be formed is insertedbetween the jaws 24 and 41, with its end in contact with the stop 45,the distance from said stop 45 to the opposite edges of the jaws 41 and24 being exactly that of the length of wire required to form the finalcoils in producing the loop. The jaw 41 is then drawn toward the jaw 24by means of the clampingscrew 47 and nut 49, operated by its crankhandle 50. The wire is then bent at right angles and extended out infront of this tool the distance desired, which is determined by theposition of the twister, (notshown,) and thence turned back and passedbetween the two main jaws 24 and 25. These jaws are then clamped firmlyonto the wire by means of the clamping-bolt 31, operated by thecrankhandle 34. The first twisting operation is i then performed by thetwister with the wires thus held firmly 1n positlon by means of myimproved tool. The said clamping-jaws are then loosened. Then the jaw 42is thrown forward toward the jaw 41 by means of the cam 52, operated byits handle 54, the limit of its movement being determined by theposition of the wedge-shaped stop 55, as before explained. This bringsthe partly-formed structure into the precise relation required for thefinishing operationvim, the final winding of the end of the wire in aclose coil about its strand. A further revolution of the twister (notshown) accomplishes this and winds up the small projecting end of thewire, (which has in the previous operation been held between the jaws 41and 24 and against the stop 45,) which, as above explained, is just longenough to form the required number of turns. It will be seen, therefore,that the wire is completely used up and there is no waste of wirewhatever in producing the structure required. I am also able to producethese wires much more rapidly than has been possible by the old methods,and thus by means of this tool I secure both economy of material andincreased production.

Having thus fully described my said invention, what I claim as new, anddesire to secure by Letters Patent, is

1. The combination, in a tool for forming loops on wires, of a base, apair of jaws pivotally secured thereto, a second pair of jaws secured tothe first pair, means for operating the main jaws toward and from eachother, means for operating one of the second jaws toward one of thefirst, and means for operating the second jaw of the second pair towardand from its fellow.

2. The combination, in a tool for forming loops on wires, of a base, apair of jaws pivotally secured thereto for clamping the main wire duringoperation, and a second jaw secured to one of said jaws for clamping thewire end during operation.

3. The combination, in a tool for forming loops on wires, of a pair ofjaws between which the main wire may be clamped, a jaw secured to one ofsaid main jaws between which and said main jaw the end of the wire maybe clamped, and a stop against which the end of the wire may be placedand whereby the length of said wire end may be determined.

4. The combination, in a tool for forming loops on wires, of jawsmovable toward and from each other, a screw and a nut for moving saidjaws, and engaging means between one member of said moving means and oneof said jaws whereby its position may be accurately and adj ustablydetermined and the most? convenient position of said rnoving means for wthe operator thus secured.

5; The combinatiomvin a tool for formingloops- 0n w1res,- of-a base,twomainaws pivotally secured to said base, two other jaws pivotally securedto the first-named jaws, means for operating said jaws, and anadjustable stop arranged betweenthe two second- 10 named jaws wherebythe distance which shall JOHN. ROss'I. [L 3.11

Witnesses:

(J. F. RUPs, J SEPH STARK.

